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Finding the Fourth Proportional to 128,410.94, 177,202.81 and 71,050.37

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Solution

The fourth proportional to 128,410.94, 177,202.81 and 71,050.37 is: 98,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,410.94 : 177,202.81 = 71,050.37 : x
  2. Step 2: Convert to fraction form
    128,410.94/177,202.81 = 71,050.37/x
  3. Step 3: Cross multiply
    128,410.94x = 177,202.81 × 71,050.37
  4. Step 4: Simplify right side
    128,410.94x = 12,590,325,739.53
  5. Step 5: Solve for x
    x = 12,590,325,739.53/128,410.94
  6. Step 6: Final answer
    x = 98,047.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.